West Sumbawa Regency (Indonesian: Kabupaten Sumbawa Barat) is a Regency (Kabupaten) of the Indonesian Province of West Nusa Tenggara. It is located on the island of Sumbawa and has an area of 1,743.58 km². The regency was created on 18 December 2003 from what were at that time the westernmost five districts (kecamatan) of Sumbawa Regency. The population at the 2010 Census was 114,754,^[2] and at the 2020 Census was 145,798;^[3] the official estimate as at mid 2023 was 152,950 comprising 77,030 males and 75,920 females.^[1] The capital is the town of Taliwang.

West Sumbawa Regency Kabupaten Sumbawa Barat
Regency
Coat of arms
Motto:  Pariri Lema Bariri
Location within West Nusa Tenggara
West Sumbawa Regency Location in Lesser Sunda Islands and Indonesia Show map of Lesser Sunda Islands West Sumbawa Regency West Sumbawa Regency (Indonesia) Show map of Indonesia
Coordinates: 8°47′14.52″S 116°55′33.2″E / 8.7873667°S 116.925889°E / -8.7873667; 116.925889
Country	Indonesia
Province	West Nusa Tenggara
Capital	Taliwang
Government
• Regent	H. W. Musyafirin, M.M
• Vice Regent	Fud Syaifuddin
Area
• Total	1,743.58 km2 (673.20 sq mi)
Population  (mid 2023 estimate)
• Total	152,950
• Density	88/km2 (230/sq mi)
	[1]
Time zone	UTC+8 (ICST)
Area code	(+62) 372
Website	sumbawabaratkab.go.id

Poto Tano, the most important harbour of West Sumbawa, is easily accessible by ferry from Lombok.

(br>== Administrative Districts == West Sumbawa Regency originally comprised five districts (kecamatan) formerly part of Sumbawa Regency, but now consists of eight districts, tabulated below with their areas and their populations at the 2010 Census^[2] and the 2020 Census,^[3] together with the official estimates as at mid 2023.^[1] The table also includes the locations of the district administrative centres, the number of administrative villages in each district (totaling 57 rural desa and 7 urban kelurahan), and its postal codes. - the latter all in Taliwang District)

Notes: (a) including the small islands of Pulau Baban and Pulau Rantung off the southwest coast of Sumbawa.
(b) including the small islands of Pulau Dua Ode, Pulau Dua Rea, Pulau Gera, Pulau Puyen, Pulau Sarang and Pulau Sesai off the west coast of Sumbawa.
(c) comprises 7 urban kelurahan (Arab Kenangan, Bugis, Dalam, Kuang, Menala, Sampir and Telaga Bertong) and 8 desa.
(d) including the islands of Pulau Belang, Pulau Kambing, Pulau Kenawa, Pulau Mandik1, Pulau Namo, Pulau Paserang and Pulau Ular off the northwest coast of Sumbawa.